ORA-38853: cannot mark instance string (redo thread string) as disabled

ORA-38853
ORA-38853: cannot mark instance string (redo thread string) as disabled
Cause: The standby switchover or failover operation failed because it needs to
mark an instance (redo thread) as disabled. That instance was up, which
prevented it from being disabled.
Action: Shut down the specified instance and retry this command.
More details : Viste http://www.high-oracle/ora-38853/
More details : Viste http://www.high-oracle/ora-38853/
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